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annotate truffle/com.oracle.truffle.api.test/src/com/oracle/truffle/api/profiles/ByteValueProfileTest.java @ 22527:114a6a77b440

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Colorifying ByteValueProfile sample code
author Jaroslav Tulach <jaroslav.tulach@oracle.com>
date Wed, 30 Dec 2015 15:33:13 +0100
parents a63bda98cfdb
children 4ba1aa33fda4
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22501
a63bda98cfdb Extract profiles into separate package. Add isProfilingEnabled in TruffleRuntime to disable profiling in the default runtime; Add low overhead profiles for primitives; Add LoopConditionProfile; Profile footprint/threadsafety improvements; Make toString implementations more consistent; Greatly enhanced javadoc documentation for profiles; Deprecate old profiles
Christian Humer <christian.humer@oracle.com>
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1 /*
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2 * Copyright (c) 2015, Oracle and/or its affiliates. All rights reserved.
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3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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4 *
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5 * This code is free software; you can redistribute it and/or modify it
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6 * under the terms of the GNU General Public License version 2 only, as
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7 * published by the Free Software Foundation.
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8 *
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9 * This code is distributed in the hope that it will be useful, but WITHOUT
a63bda98cfdb Extract profiles into separate package. Add isProfilingEnabled in TruffleRuntime to disable profiling in the default runtime; Add low overhead profiles for primitives; Add LoopConditionProfile; Profile footprint/threadsafety improvements; Make toString implementations more consistent; Greatly enhanced javadoc documentation for profiles; Deprecate old profiles
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10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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12 * version 2 for more details (a copy is included in the LICENSE file that
a63bda98cfdb Extract profiles into separate package. Add isProfilingEnabled in TruffleRuntime to disable profiling in the default runtime; Add low overhead profiles for primitives; Add LoopConditionProfile; Profile footprint/threadsafety improvements; Make toString implementations more consistent; Greatly enhanced javadoc documentation for profiles; Deprecate old profiles
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13 * accompanied this code).
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14 *
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15 * You should have received a copy of the GNU General Public License version
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16 * 2 along with this work; if not, write to the Free Software Foundation,
a63bda98cfdb Extract profiles into separate package. Add isProfilingEnabled in TruffleRuntime to disable profiling in the default runtime; Add low overhead profiles for primitives; Add LoopConditionProfile; Profile footprint/threadsafety improvements; Make toString implementations more consistent; Greatly enhanced javadoc documentation for profiles; Deprecate old profiles
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17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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18 *
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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20 * or visit www.oracle.com if you need additional information or have any
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21 * questions.
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22 */
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23 package com.oracle.truffle.api.profiles;
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24
22527
114a6a77b440 Colorifying ByteValueProfile sample code
Jaroslav Tulach <jaroslav.tulach@oracle.com>
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25 import com.oracle.truffle.api.nodes.Node;
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26 import static org.hamcrest.CoreMatchers.is;
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27 import static org.junit.Assert.assertEquals;
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28 import static org.junit.Assert.assertThat;
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29
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30 import org.junit.Before;
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31 import org.junit.Test;
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32 import org.junit.experimental.theories.DataPoint;
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33 import org.junit.experimental.theories.Theories;
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34 import org.junit.experimental.theories.Theory;
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35 import org.junit.runner.RunWith;
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36
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37 @RunWith(Theories.class)
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38 public class ByteValueProfileTest {
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39
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40 @DataPoint public static final byte VALUE0 = Byte.MIN_VALUE;
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41 @DataPoint public static final byte VALUE1 = 0;
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42 @DataPoint public static final byte VALUE2 = 14;
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43 @DataPoint public static final byte VALUE3 = Byte.MAX_VALUE;
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44
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45 private ByteValueProfile.Enabled profile;
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46
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47 @Before
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48 public void create() {
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49 profile = (ByteValueProfile.Enabled) ByteValueProfile.Enabled.create();
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50 }
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51
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52 @Test
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53 public void testInitial() {
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54 assertThat(profile.isGeneric(), is(false));
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55 assertThat(profile.isUninitialized(), is(true));
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56 profile.toString(); // test that it is not crashing
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57 }
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58
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59 @Theory
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60 public void testProfileOneObject(byte value) {
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61 byte result = profile.profile(value);
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62
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63 assertThat(result, is(value));
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64 assertEquals(profile.getCachedValue(), value);
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65 assertThat(profile.isUninitialized(), is(false));
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66 profile.toString(); // test that it is not crashing
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67 }
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68
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69 @Theory
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70 public void testProfileTwoObject(byte value0, byte value1) {
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71 byte result0 = profile.profile(value0);
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72 byte result1 = profile.profile(value1);
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73
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74 assertThat(result0, is(value0));
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75 assertThat(result1, is(value1));
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76
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77 if (value0 == value1) {
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78 assertThat(profile.getCachedValue(), is(value0));
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79 assertThat(profile.isGeneric(), is(false));
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80 } else {
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81 assertThat(profile.isGeneric(), is(true));
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82 }
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83 assertThat(profile.isUninitialized(), is(false));
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84 profile.toString(); // test that it is not crashing
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85 }
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86
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87 @Theory
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88 public void testProfileThreeObject(byte value0, byte value1, byte value2) {
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89 byte result0 = profile.profile(value0);
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90 byte result1 = profile.profile(value1);
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91 byte result2 = profile.profile(value2);
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92
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93 assertThat(result0, is(value0));
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94 assertThat(result1, is(value1));
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95 assertThat(result2, is(value2));
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96
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97 if (value0 == value1 && value1 == value2) {
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98 assertThat(profile.getCachedValue(), is(value0));
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99 assertThat(profile.isGeneric(), is(false));
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100 } else {
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101 assertThat(profile.isGeneric(), is(true));
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102 }
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103 assertThat(profile.isUninitialized(), is(false));
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104 profile.toString(); // test that it is not crashing
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105 }
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106
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107 @Test
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108 public void testDisabled() {
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109 ByteValueProfile.Disabled p = (ByteValueProfile.Disabled) ByteValueProfile.Disabled.INSTANCE;
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110 assertThat(p.profile(VALUE0), is(VALUE0));
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111 assertThat(p.profile(VALUE1), is(VALUE1));
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112 assertThat(p.profile(VALUE2), is(VALUE2));
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113 assertThat(p.profile(VALUE3), is(VALUE3));
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114 p.toString(); // test that it is not crashing
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115 }
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116
22527
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117 // BEGIN: ByteValueProfileSample
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118 class SampleNode extends Node {
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119 final ByteValueProfile profile = ByteValueProfile.createIdentityProfile();
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120
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121 byte execute(byte input) {
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122 byte profiledValue = profile.profile(input);
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123 // compiler may know now more about profiledValue
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124 return profiledValue;
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125 }
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126 }
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127 // END: ByteValueProfileSample
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128 }